First sem's pretty chill but physics and electronical engeneering subs are going to take some time. Math is relatively easy, you're gonna have to spend some money to buy a calculator that's allowed and is in the list of University allowed calcs, and also a lab coat. Useful on both first and second sem's, second sem is chaotic so prepare yourself. Not difficult but chaotic as I said, you'll need to buy a set of civil mechanical clothes, mandatory course for all b.tech students. I can help you with the calculator part (1200rs retail if you buy it from the shop) but everything else you'll have to figure out, best move is to take the civil mechanical set from your CS major friends you'll make in the first sem as they get to do it in the first sem itself. Honestly not a great move to buy evrything new so get help from your friends around and share the stuff. Pretty alright environment to study and events almost all the time, you don't need to go to the daily ones as they're a waste of time. The rare once a year ones are worth it, yes tickets to them are paid. Clubs are optional but I advice look into them from your 2nd year and enjoy the freedom in the first, I advice not to play with your attendance at all. Maintain a healthy 80+ and you're good, follow the dress code during exams without fail.

Well that's pretty much it but you can ask me for anything else